Page 6 - Bosch The basis for production excellence

6 | Quality, precision and a sense of responsibility

Welding with precision

Boilers up to 120 tons can turned quickly, safely and Welding in a horizontal position allows a more homoge-
gently, positioned and processed ideally in the Bosch neous structure, a higher penetration depth, and the
factories thanks to our high load process cranes and highest welding quality due to an overall more consist-
our high production halls. In outdated production facili- ent welding process.
ties boilers of more than 60 tons often have to be posi-
tioned horizontally because of height restrictions. As a For the individual assembly of a boiler with flanges and
result flame tube and smoke tubes need to be welded customised equipment, the components are connected
in a vertical position which can lead to quality problems manually using the metal active gas welding (MAG)
as the liquid metal always follows gravity. procedure.

To achieve non-porous seams it is essential that the
inert gas in the welding process is not blown away. We
ensure this by protecting our work areas with wind-
protected work stations, special ventilation systems
and radiant ceiling heating instead of conventional hot
air blowers.

9 m Our globally unique, self-developed corrugated tube

machine is able to manufacture fully automatically
corrugated flame tubes with up to 9 metres length. The
machine has 12 servomotors and 3 lasers for monitor-
ing and precise control. It manufactures corrugated
flame tubes accurate to a fraction of a millimetre thanks
to laser technology. Corrugated flame tubes are a vital
part of the boiler and amongst the highest stressed
parts, making precision and process quality essential.